Compaq Contec COM-2(PC)F - Manual (Page 45)

Troubleshooting
COM-2(PC)F
36
Does the sample program work?
Check the following:
- Signals are connected to the correct pins.
- Pin connections on the I/O cables are secure.
- Signals are present at the external connectors.
- Try using the COM-2(PC)F board with other non-essential boards
removed. Remove other boards one by one, checking the
COM-2(PC)F for successful operation after each board is
removed.
Is the input data accurate?
If you believe something is wrong with either the input data or the
output data, check the following:
- Environmental noise. Move the equipment and cables away
from sources of electrical noise. Try an isolated power source.
- Dirty connector edge. Clean the edge.
- External connectors fit tightly. Separate and reattach external
cables.
Still have a probrem?
Contact CONTEC group office where you purchased as shown in
the last page of this manual.
Note!
Before you call, make a list of the following information. Our
technical representatives will need the following information to help
you.
1. Your name, company, and phone number.
2. The brand and type of computer you are using (e.g. IBM-AT,
Compaq 386).